﻿using RWSBeeldbank.Common;
using RWSBeeldbank.Data;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Storage;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using RWSBeeldbank.DataModel;

// The Grouped Items Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234231

namespace RWSBeeldbank
{
    /// <summary>
    /// A page that displays a grouped collection of items.
    /// </summary>
    public sealed partial class GroupedItemsPage : LayoutAwarePage
    {
        public GroupedItemsPage()
        {
            // Start cache 
            this.NavigationCacheMode = NavigationCacheMode.Required;

            this.InitializeComponent();
        }

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="navigationParameter">The parameter value passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
        /// </param>
        /// <param name="pageState">A dictionary of state preserved by this page during an earlier
        /// session.  This will be null the first time a page is visited.</param>
        protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            var mediaObjectDataGroups = MediaObjectDataSource.GetGroups((String)navigationParameter);
            this.DefaultViewModel["Groups"] = mediaObjectDataGroups;
            this.groupGridView.ItemsSource = this.groupedItemsViewSource.View.CollectionGroups;
        }

        /// <summary>
        /// Invoked when a group header is clicked.
        /// </summary>
        /// <param name="sender">The Button used as a group header for the selected group.</param>
        /// <param name="e">Event data that describes how the click was initiated.</param>
        void Header_Click(object sender, RoutedEventArgs e)
        {
            // Determine what group the Button instance represents
            var group = (sender as FrameworkElement).DataContext;

            // Navigate to the appropriate destination page, configuring the new page
            // by passing required information as a navigation parameter
            this.Frame.Navigate(typeof(GroupDetailPage), ((MediaObjectDataGroup)group).UniqueId);
        }

        /// <summary>
        /// Invoked when an item within a group is clicked.
        /// </summary>
        /// <param name="sender">The GridView (or ListView when the application is snapped)
        /// displaying the item clicked.</param>
        /// <param name="e">Event data that describes the item clicked.</param>
        void ItemView_ItemClick(object sender, ItemClickEventArgs e)
        {
            // Navigate to the appropriate destination page, configuring the new page
            // by passing required information as a navigation parameter
            var mediaObjectId = (MediaObjectDataItem)e.ClickedItem;

            var itemId = mediaObjectId.UniqueId;

            switch (mediaObjectId.TypeId)
            {
                case Constants.ITEM_TYPE_VIDEO:
                    this.Frame.Navigate(typeof(VideoDetailPage), itemId);
                    break;
                case Constants.ITEM_TYPE_DIGITAL:
                    //this.Frame.Navigate(typeof(ItemDetailPage), itemId);
                    this.Frame.Navigate(typeof(DigitalItemDetailPage), itemId);
                    break;
                default :
                    this.Frame.Navigate(typeof(ItemDetailPage), itemId);
                    break;
            }
        }

        private void SearchBoxEventsQuerySubmitted(Windows.UI.Xaml.Controls.SearchBox sender, SearchBoxQuerySubmittedEventArgs args)
        {
            // Process results and display the search results page. 

            var previousContent = Window.Current.Content;
            var frame = previousContent as Frame;


            // If the app is already running and uses top-level frame navigation we can just
            // navigate to the search results
            frame.Navigate(typeof(SearchResults), args.QueryText);


            // Either way, active the window
            Window.Current.Activate();
        }

        /// <summary>
        /// Populates SearchBox with Suggestions when user enters text
        /// </summary>
        /// <param name="sender">The Xaml SearchBox</param>
        /// <param name="e">Event when user changes text in SearchBox</param>
        private void SearchBoxEventsSuggestionsRequested(object sender, SearchBoxSuggestionsRequestedEventArgs e)
        {
            string queryText = e.QueryText;
            if (!string.IsNullOrEmpty(queryText))
            {
                Windows.ApplicationModel.Search.SearchSuggestionCollection suggestionCollection = e.Request.SearchSuggestionCollection;
                foreach (string suggestion in MediaObjectDataSource.AllKeywords)
                {
                    if (suggestion.StartsWith(queryText, StringComparison.CurrentCultureIgnoreCase))
                    {
                        suggestionCollection.AppendQuerySuggestion(suggestion);
                    }
                }
            }
        }

    }
}
